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Q.

2 g of a non-volatile non-electrolyte solute is dissolved in 200 g of two different solvents A and B whose ebullioscopic constants are in the ratio of 1: 8. The elevation in boiling points of A and B are in the ratio $\frac{x}{y} (x : y)$ . The value of y is……..
(Nearest integer)

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answer is 8.

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Detailed Solution

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$Given: \frac{{(K_{b})}_{A}}{{(K_{b})}_{B}} = \frac{1}{8} ∴ \frac{{({ΔT}_{B})}_{A}}{{({ΔT}_{B})}_{B}} = \frac{{(K_{b})}_{A} \cdot m}{{(K_{b})}_{B} \cdot m} = \frac{1}{8} = \frac{x}{y} ∵ \frac{x}{y} = \frac{1}{8} y = 8 (nearest integer)$

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2 g of a non-volatile non-electrolyte solute is dissolved in 200 g of two different solvents A and B whose ebullioscopic constants are in the ratio of 1: 8. The elevation in boiling points of A and B are in the ratio xy(x:y). The value of y is…….. (Nearest integer)